We discuss a recently developed chemical model reduction strategy based on the use of Computational Singular Perturbation (CSP) analysis. This strategy was used to develop comprehensive simplified chemical models starting from detailed hydrocarbon kinetics. In the present work, we examine the accuracy resulting from using these mechanisms, as compared with the detailed model, in both steady and unsteady flame environments, under strain-rate and curvature perturbations, and under ranges of mixture conditions. These comparisons quantify the errors resulting from different degrees of reduction, highlighting the consequences of a given degree of model reduction on accurate prediction of different elements of hydrocarbon flame structure.
Reacting flow computations with reduced chemical mechanisms / Najm, H. N.; Iams, S.; Valorani, M.; Creta, F.; Goussis, D. A.. - 1:(2005), pp. 127-140. (Intervento presentato al convegno Fall Technical Meeting of the Western States Section of the Combustion Institute 2005, WSS/CI 2005 tenutosi a Stanford University, usa).
Reacting flow computations with reduced chemical mechanisms
Valorani M.;Creta F.;
2005
Abstract
We discuss a recently developed chemical model reduction strategy based on the use of Computational Singular Perturbation (CSP) analysis. This strategy was used to develop comprehensive simplified chemical models starting from detailed hydrocarbon kinetics. In the present work, we examine the accuracy resulting from using these mechanisms, as compared with the detailed model, in both steady and unsteady flame environments, under strain-rate and curvature perturbations, and under ranges of mixture conditions. These comparisons quantify the errors resulting from different degrees of reduction, highlighting the consequences of a given degree of model reduction on accurate prediction of different elements of hydrocarbon flame structure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
